A gunman who announced online that he was planning to shoot two "pigs" in retaliation for the police chokehold death of Eric Garner ambushed two officers in a patrol car and shot them to death in broad daylight Saturday before running to a subway station and killing himself, authorities said.

Elizabeth A. Pfister, 84, of Pontiac, died at 11:11 p.m. Thursday, Dec. 18, 2014, at OSF Saint Joseph’s Medical Center in Bloomington.A graveside service will be held at 10 a.m. Monday at Southside Cemetery, Pontiac with Rev.